27728572767 has 8 divisors (see below), whose sum is σ = 42253063296. Its totient is φ = 15844898712.

The previous prime is 27728572757. The next prime is 27728572771. The reversal of 27728572767 is 76727582772.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27728572767 - 2¹⁰ = 27728571743 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27728572767.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27728572757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 660204093 + ... + 660204134.

It is an arithmetic number, because the mean of its divisors is an integer number (5281632912).

Almost surely, 2^27728572767 is an apocalyptic number.

27728572767 is a deficient number, since it is larger than the sum of its proper divisors (14524490529).

27728572767 is a wasteful number, since it uses less digits than its factorization.

27728572767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1320408237.

The product of its digits is 32269440, while the sum is 60.

The spelling of 27728572767 in words is "twenty-seven billion, seven hundred twenty-eight million, five hundred seventy-two thousand, seven hundred sixty-seven".